Underground storage tank (UST) operators are required to have Arizona-specific Class A/B and Class C UST operator training.¹ This training must be completed at least once every three years and training records must be made available during UST facility inspections to prove compliance.

Training is available through multiple providers and all formats of learning are accepted to meet requirements (online, in-person, etc.).

How Do I Find Training?

No-cost, online Class A/B/C training has been made available to UST operators that have a UST facility regulated by ADEQ. The online courses are self-paced, cover Arizona-specific information, and include an exam and certificate of completion. You will just need a computer, high-speed internet, and speakers or headphones | Select a No-Cost Course >

Please limit the number of Class A/B operators to two individuals per UST facility so everyone in the state of Arizona can enjoy this no-cost training.

What are Class A, B and C operators?

The owner or operator of an UST system must designate a Class A, B, and one or more Class C individuals to complete operator training.

• Class A Operators have the primary responsibility of assuring the regulated facility(s) meet compliance and documentation requirements set by law. Each designated Class A operator must either be trained or pass a comparable examination that provides general knowledge of USTs.
• Class B Operators must either be trained or pass an examination about the regulatory requirements and typical equipment used at UST facilities; or site-specific requirements which address only the regulatory requirements and equipment specific to the facility.
• Class C Operators must either be trained by a Class A or Class B operator; complete a training program; or pass a comparable examination. The training option chosen must teach or evaluate the Class C operator's knowledge to take appropriate actions (including notifying appropriate authorities) in response to emergencies or alarms caused by spills or releases resulting from the operation of the UST system.

Do owners and operators have to be Class A or B?

Not necessarily, some companies choose to hire a qualified third party to be the designated Class A and/or B. If an owner/operator designate a third party as the Class A or B operator, ADEQ still recommends the owner/operator to take the class.

How often do I need to renew my A/B Operator Certification?

Class A and B operators must be retrained and recertified every 3 years. If the department finds that a storage tank system is significantly out of compliance, the Class A and Class B operator must be retrained and recertified.

Notice: Pursuant to section 41-1093.01, Arizona Revised Statutes, an agency shall limit all occupational regulations to regulations that are demonstrated to be necessary to specifically fulfill a public health, safety or welfare concern. Pursuant to sections 41-1093.02 and 41-1093.03, Arizona Revised Statutes, you have the right to petition this agency to repeal or modify the occupational regulation or bring an action in a court of general jurisdiction to challenge the occupational regulation and to ensure compliance with section 41‑1093.01, Arizona Revised Statutes.

¹In accordance with Arizona Revised Statutes (A.R.S.) | View A.R.S. § 49-1083(F) >